AITA for making my grandfather sick?

My family is really traditional and my grandfather is definitely the patriarchal figure who we all look up to. He made a lot of money through his companies and as a result, our whole family live very comfortable lives.

I recently lost my virginity and in my family amongst my male cousins and uncles that is a big deal, we have a big BBQ for each person when it happens. Yesterday we had mine and there’s obviously some gentle ribbing involved. One of my uncles was asking about the girl, asking if she was blind etc and what her father did for work. I mentioned he owned the local Indian restaurant and the mood changed. My grandfather turned white as a sheet and put his hands on my shoulders and said ‘you need to be honest with us now, is the girl White?’ I shook my head and my grandfather just stormed off. One of my uncles followed him but I was angry so I shouted something about him being racist. A few minutes later my uncle ran back saying Granddad was very sick and had thrown up all over himself and he needed to go home. One of my cousins volunteered to drive him, as he was being helped into the car I tried to ask if he was okay but he just waved me away and called me curry dick.

My uncle was very angry at me for making my grandfather sick but I’m not sure what I’ve done wrong? AITA?

Edit: my uncle has now contacted me to tell me that my grandfather wasn’t being racist, it’s just that in the 90s his chain of restaurants when under as a result of the local Indian restaurants under cutting him which is fair enough